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_DealGroup版 - 【$】Radiometer Science Toy now $3.99 on Amazon
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话题: radiometer话题: amazon话题: toy话题: science话题: vanes
1 (共1页)
w*******y
发帖数: 60932
1
Radiometer Science Toy now $3.99 on Amazon:
http://www.amazon.com/Tedco-01800-Radiometer/dp/B0007YFJI2?SubscriptionId=AKIAI2YF244XWR3NWH3Q&tag=dc1903-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B0007YFJI2
Experience this sphere powered by the sun! The vanes in the Radiometer are
alternately dark and light in color. When the light strikes these vanes, it
transfers heat to each one - but not at the same degree. The lighter vane
reflects the rays and the darker vane absorbs the rays. The stronger the
light, the more energy there is causing the vanes to spin faster.
1 (共1页)
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话题: radiometer话题: amazon话题: toy话题: science话题: vanes